A Quad Focus GridPix Gaseous Tracking Detector is under construction, to allow calibration and test beam measurements to validate the working principles of the (quad) GridPix detectors while using a focused electric field. The development is well on its way: both measurements should be able to be conducted …

Waterborne diseases are posing a constant threat for people. In developing countries there is a lack of microbiologically safe drinking water and in the developed countries there are occasional waterborne disease outbreaks. These diseases are caused by bacteria or parasites which can be found in various …

In het kader van de afstudeerstage voor de opleiding Technische Natuurkunde aan de Haagse Hogeschool is er een opdracht uitgevoerd bij de onderzoeksgroep Charged Particle Optics aan de TU Delft. De opdracht is een onderdeel van het mini-NAIS project en beslaat het ontwerpen, opbouwen en testen van de …

A new gravitation wave observatory is being built in Japan. This facility is a big Michelson interferometer where the mirrors and sensors will be made cryogenic down to 4 K. The problem is that: the heat cannot be transported out of the mirror by its surroundings because the whole system is in an ultra-high …

In opdracht van het Expertise centrum zal in 2016 een Sustainable Urban Vehicle gebouwd worden. Het is de bedoeling dat er gekwantificeerde groene concepten ontwikkeld worden alvorens een prototype gemaakt kan worden. In dit vroege stadium van het project is gekeken naar de belasting van brandstof, …

Fuel cell hybrid power trains comprise an energy storage to supply peaks in the power demand and to facilitate regenerative braking. In terms of control systems, the presence of storage provides additional freedom to minimize the vehicle’s fuel consumption. In a previous paper [1] an analytical solution …

De auteur beschrijft een aantal artikelen uit het Journal of Chemical Education 2010 die interessant en geschikt zijn voor gebruik in het scheikunde onderwijs. De volgende onderwerpen komen aan de orde: pH, plastic, kauwgum, melamine, logica in de chemie, natriumpolyacrylaat, H+-ion en theromolyse van …

pH-sensitive gels: By using a cyclohexane-based scaffold to which various amino acid based substituents can be connected, low-molecular-weight compounds were obtained that can gelate water at very low concentrations. Their modular design (see picture: AA = amino acid(s), X = hydrophilic substituent, …

The degradation of lactic acid under anoxic conditions was studied in several strains of Lactobacillus buchneri and in close relatives such as Lactobacillus parabuchneri, Lactobacillus kefir, and Lactobacillus hilgardii. Of these lactobacilli, L. buchneri and L. parabuchneri were able to degrade lactic …